True Size Ring Mandrels

True Size Ring Mandrels are precision-calibrated tools designed to work seamlessly with the True Size Precision ring sizing system, eliminating costly sizing errors between the sales counter and the jeweler's bench. Manufactured by Ikohe — a leading name in professional jewelry tools sold worldwide — these mandrels were formerly branded as Wolf Tools True Size Ring Mandrels and continue to set the standard for sizing accuracy.

Each mandrel is crafted from hardened steel and laser etched in 1/4 sizes from 1–16, ensuring clear, durable markings that hold up to daily bench use. A built-in sizing gauge on the end allows jewelers to quickly measure the amount of stock needed to fabricate a ring at any given size. Precision manufactured using Swiss Made CNC machinery, these mandrels deliver the consistency professional jewelers demand.

Available in two configurations: a standard Graduated model and a Graduated & Grooved model for added versatility in forming and sizing work.

Features

• Precision calibrated to match the True Size Precision ring sizing system
• Laser etched in 1/4 sizes from size 1–16 for clear, lasting readability
• Built-in sizing gauge on the end for quick stock measurement
• Made from hardened steel for durability at the bench
• Manufactured using Swiss Made CNC machinery
• Available in Graduated or Graduated & Grooved configurations

Specifications

Available Options